"Does all Works With Vista software work with the 64-bit version?"
That's hard to understand so I'll take it you were asking if all software that works on Vista 32 works on Vista 64. The answer is NO!
There are titles that fail so you need to ask the software's maker before you pull this trigger.
I'm considering getting an HP Pavilion Elite m9100, which comes with Vista-64 as the default operating system, but can be special ordered with Vista-32. Which should I get?
Does all Works With Vista software work with the 64-bit version? I'm currently using 2002 software, so I don't mind paying to upgrade software for my new computer.
Are hardware drivers still an issue, or have those issues been mostly resolved?